79940392 has 64 divisors (see below), whose sum is σ = 183047040. Its totient is φ = 31948800.

The previous prime is 79940363. The next prime is 79940401. The reversal of 79940392 is 29304997.

It is a super-2 number, since 2×79940392² = 12780932546227328, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124392 + ... + 125032.

It is an arithmetic number, because the mean of its divisors is an integer number (2860110).

Almost surely, 2^79940392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79940392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91523520).

79940392 is an abundant number, since it is smaller than the sum of its proper divisors (103106648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79940392 is a wasteful number, since it uses less digits than its factorization.

79940392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802 (or 798 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 79940392 is about 8940.9391005643. The cubic root of 79940392 is about 430.7798934632.

The spelling of 79940392 in words is "seventy-nine million, nine hundred forty thousand, three hundred ninety-two".